Boiler "Immediately Dangerous" on flue external CO

70 PPM CO is definitely dangerous. Sleeping for 8 hours in 35 PPM may cause brain damage, along with false alarms for a device this sensitive.

The problem is CO has 300x the affinity for blood cells than does O2.

BTW, there is a slight vacuum inside of a moving car so if you have headaches, nausea or dizziness while driving look and listen for an exhaust leak.

Absolute *******s I have noted that you are from the glorious US of A but a standard condensing boiler registering 70PPM CO would not be unusual as long as the CO2 was within the Manufacturers recommendations
 
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Out of interest, do you have a carbon monoxide detector near the boiler and if not, why not?

Rmj, what exactly is this detector going to be detecting?

Icy chris, chances are the boiler needs a proper service and replacement clamp or a flue and it will still out last many a modern high efficiency steamer

Discussion running on at page 4. Interesting the service of boiler as recommended by makers has been superceeded by carrying out FGA. I see lack of service and lack of proper understanding of how gas appliances work leading to the scenario laid out in this discussion. If the boiler case was removed, flue checked, even rudimentary checks carried out periodically, boiler would still be chugging away.

Icychris, why not get someone who is hungry, knowledgeable and honest to look at your boiler. Can assure you the boiler WILL need proper service that will have been neglected for many moons. If it then needs replacing, so be it. Only couple of weeks ago a boiler was condemned to the scrap heap for not having washers the FGA part changers had lost. Second opinion given and suddenly the same people who shut the appliance down put it back into service
 
70 PPM CO is definitely dangerous. Sleeping for 8 hours in 35 PPM may cause brain damage, along with false alarms for a device this sensitive.

The problem is CO has 300x the affinity for blood cells than does O2.

BTW, there is a slight vacuum inside of a moving car so if you have headaches, nausea or dizziness while driving look and listen for an exhaust leak.
Damn I better shut down all they new boilers.
Typical reading from a brand new Logic is 100-120ppm CO and 8.5-9.5 CO2
Ratio approx 0.0012. ;)
 
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No, it's just you don't know how UK boilers are installed. Probably best to avoid giving advice on such matters in case you put someone in jeopardy.
 
The new regulation brought in will allow up to 350ppm Total nonsense if you ask me, most boilers I commission when set to manufacturers CO2/O2 settings I get around 30ppm
 
Porky the lads here are talking about co levels measured in the boiler flue gasses, you are equating that to ambient co levels in the room. Two different things, wickipedia doesn't explain everything. :rolleyes:
 

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